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KTR Kupplungstechnik 

GmbH 

D-48407 Rheine 

RIGIFLEX

®

-N 

Operating/Assembly instructions 

KTR-N 
Sheet: 
Edition:

 

47410 EN 
9 of 19 
9 

 

Please observe protection 

note ISO 16016. 

Drawn: 14.01.14 

Kb/Sta  Replaced for: 

KTR-N dated 28.05.13 

Verified: 

16.01.14 Kb 

Replaced by: 

 

 

4 Assembly 

 

4.4 Assembly of the spacer 

 

  The coupling hubs have to be aligned such that the through 

holes of the coupling hubs line up. 

  Clean and degrease the centerings and contact surfaces on the 

spacer and coupling hubs. 

  Pull up the flanges of „spacer complete“ closer to the spacer 

each at the maximum value R (table 6) by means of the retaining 
screws (illustration 5). 

  Insert the spacer between the hubs. 

  Centre the spacer in the coupling hubs by unscrewing and re-

moving the retaining screws. 

 

 

Illustration 5 

 
 

 

Illustration 6 

! 

 

C A U T I O N !  
The retaining screws have to be removed for the 
further assembly and the operation.

 

 

  Hand-screw the spacer to the coupling hubs via the cap screws 

(illustration 6). 

  Tighten the cap screws one after another and with several revo-

lutions until all cap screws have reached the full tightening torque 
(see table 7). 

 

Table 6: 

RIGIFLEX

®

-N size 

35 50 65 75 85 110 120 140 160 

Value R [mm] 

1.7 

1.2 

1.2 

1.7 1.7 2.2 2.2 3.2 4.2 

 

RIGIFLEX

®

-N size 

166 / 168  196 / 198  216 / 218  256 / 258  306 / 308  346 / 348  406 / 408

Value 

R 

[mm] 

2.2 2.7 2.7 2.7 3.2 3.2 3.2 

 

Table 7: Tightening torques of the cap screws 

RIGIFLEX

®

-N size 

35 50 65 75 85 110 120 140 160 

Dimension Mxl [mm] 

M4x45  M6x22 M6x25 M8x30 M8x30 M10x35 M12x40 M16x50 M16x55

Tightening torque T

A

 

[Nm] 

4.1 14 14 35 35  69  120 295 295 

 

RIGIFLEX

®

-N size 

166 / 168  196 / 198  216 / 218  256 / 258  306 / 308  346 / 348  406 / 408

Dimension Mxl [mm] 

M20x50 

M20x50 

M20x65 M24x80 M27x100 M30x110 M36x130 

Tightening torque T

A

 

[Nm] 

560 560 560 970 1450 1950 3300 

 

! 

 

C A U T I O N !  
Having started up the coupling, the tightening torque of the cap screws has to be inspected 
at regular maintenance intervals. 

 
 
For spacers with axial limitation (as an option) please note the follow-
ing: 

  Before mounting the spacer, remove the screws and disks for 

axial limitation. 

  Having mounted the spacer completely, please re-assemble the 

screws and disks of the axial limitation (illustration 7). Please ob-
serve the axial backlash S as per dimension sheet. 

  Secure the screws against working loose by means of an adhe-

sive (Loctite). 

 

Illustration 7 

 

Содержание RIGIFLEX-N

Страница 1: ... EN 1 of 19 9 Please observe protection note ISO 16016 Drawn 14 01 14 Kb Sta Replaced for KTR N dated 28 05 13 Verified 16 01 14 Kb Replaced by RIGIFLEX N Torsionally stiff steel lamina coupling type A according to directive 94 9 EC ATEX 95 for finish bored pilot bored and unbored couplings Size 35 Size 50 408 ...

Страница 2: ...gs 2 5 Intended use 3 Storage 4 Assembly 4 1 Components of the couplings 4 2 Advice for finish bore 4 3 Assembly of the coupling hubs 4 4 Assembly of the spacer 4 5 Displacements alignment of the couplings 4 6 Spares inventory customer service addresses 5 Enclosure A Advice and instructions regarding the use in hazardous locations 5 1 Selection of the coupling size 5 2 Intended use in hazardous lo...

Страница 3: ...80 200 250 M10 25 120 120 165 213 130 102 20 3 0 12 180 200 250 M12 25 140 140 200 265 160 126 25 4 0 15 200 250 M12 30 160 160 230 305 170 145 31 5 0 15 250 M12 30 166 160 230 305 184 155 31 2 0 17 According to customer spe cification M16 30 70 196 190 260 330 200 185 32 2 5 24 M16 40 90 216 210 285 370 220 205 32 2 5 26 M20 50 110 256 250 350 440 265 245 38 2 5 31 M20 70 130 306 300 400 515 310 ...

Страница 4: ...d 2 Advice 2 1 Coupling selection C A U T I O N For a long lasting and failure free operation of the coupling it must be selected according to the selection instructions for the particular application see RIGIFLEX N catalogue If the operating conditions performance speed modifications on engine and machine change the coupling selection must be reviewed again Please note that the technical data reg...

Страница 5: ...idental switch on e g by providing warning signs at the place of switch on or removing the fuse for current supply Do not touch the operation area of the coupling as long as it is in operation Please secure the coupling against accidental contact Please provide for the necessary protection devices and covers 2 5 Intended use You may only assemble operate and maintain the coupling if you have caref...

Страница 6: ...see table 4 Setscrews DIN EN ISO 4029 2 1 Spacer complete 3 see table 3 Cap screws Size 35 Size 50 408 Illustration 2 RIGIFLEX N type A Table 3 RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Number of cap screws 1 24 16 24 24 36 36 36 36 36 RIGIFLEX N size 166 196 216 256 306 346 406 Number of cap screws 1 24 24 36 36 36 36 36 RIGIFLEX N size 168 198 218 258 308 348 408 Number of cap screws 1 32 3...

Страница 7: ...le with pilot bored or unbored hubs respectively It has to be drilled according to illustration 3 Size and depth of the centering are shown in table 1 Size 35 Size 50 408 Illustration 3 Concentricity and axial runout C A U T I O N The customer bears the sole responsibility for all machining processes performed subse quently on unbored or pilot bored as well as finish machined coupling components a...

Страница 8: ... this advice may cause damage to the coupling For the axial alignment of the coupling the distance dimension E see table 1 is decisive In order to adjust the right dimension E you should proceed as follows Shift the coupling hubs on the shaft of the driving and driven side The internal sides of the coupling hubs must be flush with the front sides of the shafts illustration 4 Align the power pack i...

Страница 9: ... have reached the full tightening torque see table 7 Table 6 RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Value R mm 1 7 1 2 1 2 1 7 1 7 2 2 2 2 3 2 4 2 RIGIFLEX N size 166 168 196 198 216 218 256 258 306 308 346 348 406 408 Value R mm 2 2 2 7 2 7 2 7 3 2 3 2 3 2 Table 7 Tightening torques of the cap screws RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Dimension Mxl mm M4x45 M6x22 M6x25 M8x30 M...

Страница 10: ... 8 If the figures are exceeded the coupling will be damaged The more accurate the alignment of the coupling the longer is its service life If used in hazardous locations for the explosion group IIC marking II 2GD c IIC T X only half of the displacement figures see table 8 are permissible Please note The displacement figures mentioned in table 8 are maximum figures which must not arise in parallel ...

Страница 11: ...1 05 1 54 1 78 2 39 120 0 7 2 6 1 00 1 49 1 73 2 35 140 0 7 3 3 1 55 2 16 160 0 7 3 8 1 99 166 0 7 3 7 Mounting dimension E as indicated by the customer 196 0 7 4 2 216 0 7 4 5 256 0 7 5 2 306 0 7 6 0 346 0 7 6 7 406 0 7 7 5 168 0 5 2 6 198 0 5 2 6 218 0 5 2 9 258 0 5 3 5 308 0 5 4 2 348 0 5 4 8 408 0 5 5 0 each lamina set 4 6 Spares inventory customer service addresses A basic requirement to ensu...

Страница 12: ...echanical and or chemical influences with the different operating conditions in a way that the explosion protection is not affected 1 Industry with the exception of mining Equipment group II of category 2 and 3 coupling is not approved for equipment group 1 Media class G gases fogs steams zone 1 and 2 coupling is not approved for zone 0 Media class D dusts zone 21 and 22 coupling is not approved f...

Страница 13: ...ficant or no wear on the lamina set upon this initial inspection further inspections can each be performed after 6000 operating hours or at the latest after 18 months provided that the operating parameters remain the same If you note significant wear during the initial inspection so that it would be recommendable to replace the lamina sets please find out the cause according to the table Breakdown...

Страница 14: ... have to be replaced by a new fully as sembled spacer immediately Illustration 11 RIGIFLEX N type A C A U T I O N In order to ensure a long service life of the coupling and avoid dangers with the use in haz ardous locations the shaft ends must be accurately aligned Please absolutely observe the displacement figures indicated see table 8 If the figures are exceeded the coupling will be damaged Faul...

Страница 15: ...ssary and also inspect all screw connections for the tightening torques specified each dependent on the type of coupling If used in hazardous locations the setscrews to fasten the coupling hubs as well as all screw con nections must be secured against working loose additionally e g conglutinating with Loctite aver age strength Finally the coupling protection against accidental contact must be fitt...

Страница 16: ...riming painting etc couplings are used in hazardous locations the requirements on conductibility and coating thickness must be considered In case of paintings up to 200 µm electro static load does not have to be expected Multiple coatings that are thicker than 200 µm are prohib ited for explosion group llC 5 8 Breakdowns causes and elimination The below mentioned failures can result in a use of th...

Страница 17: ... under the screw head and on the steel lamina set Danger of ignition due to hot surfaces 1 Set the unit out of operation 2 Inspect coupling components and re place coupling components that are damaged 3 Tighten the cap screws until the per missible tightening torque is reached 4 Inspect alignment adjust if necessary Screws for axial fastening of coupling hubs working loose none 1 Set the unit out ...

Страница 18: ...remainders of the spacer 3 Inspect coupling components and re place coupling components that are damaged 4 Insert spacer mount coupling compo nents 5 Instruct and train the service staff Cracks in fracture of the steel lamina set locking screws Vibrations of drive Ignition risk due to sparking 1 Set the unit out of operation 2 Disassemble the coupling and remove remainders of the spacer 3 Inspect ...

Страница 19: ...tions correspond to article 1 3 b of directive 94 9 EC and comply with the general safety and health requirements according to enclosure II of directive 94 9 EC The RIGIFLEX N steel lamina coupling is in accordance with the specifications of directive 94 9 EC One or several directives mentioned in the corresponding EC type examination certificate IBExU07ATEXB004 X were in part replaced by updated ...

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